In the Map Tracking view you can find the approximate location as well as how many deliveries the truck will have to do before yours.
This allows you to either hurry home to receive your highly anticipated new toy or perhaps prepare for delivery (read: close the curtains, hide the bodies).
The feature was already available to selected few since last year but now it has reportedly been expanded to most if not all users. The Amazon app will remind you with a notification when Map Tracking is available.
Hey @amazon thanks for the same day delivery for insanely inexpensive cost! Plus the feature where it shows where the Amazon delivery person is on a map and how many parcels they're delivering before yours is a godsend and so nice to have in the Bay Area! You rock! ❤️🤙🏻 pic.twitter.com/j5nUxk3QuV— J. Austyn Belanger (@JRyanNYC) February 25, 2018